Improvement in harrows



'R'. MITCHELL.

Harrow.

No. 196,921. Patented Nov. 6,1877.

MPETERSI Pnomufiioemmzn. WASNINGTDN, u c.

ROBERT MITOHELLJOF LINCOLN, NEBRASKA ASSIGNOR or ONE-HALF His RIGHT TO RICHARD W. TAYLOR. 1

'JMPROVEM'ENTI'IINI .HARROWSP Specification forming part of Letters Patent No; 196,921, datedNovember .6, 1877; application filed I May 8,1877. I

of a sulky-harrow of that class wherein thehar-I row-frame has a vibrating movement from side to side, which will be simple in construction, efficient in operation, and will not easily get out of order; and my invention therein consists, mainly, in the peculiar manner of hanging such a harrow, and in so attaching it to 'the main frame that it can be drawn forward by springs without interfering with its vibrating movement.

In the drawings making apart hereof, Figure 1 is a central vertical section on the line of the tongue of the machine, and Fig. Zarear elevation of the machine.

Like lettersdenote corresponding parts in each figure.

A is a rectangular frame, composed of .side bars a a and cross-bars a a, secured together in any suitable manner. This frame is placed with its greatest length crossing the machine, so as to give room beneath it for a long harrow. An axle-tree, A, crosses the frame A, and has mounted on its ends, outside of said frame, the wheels B B. The drivers seat I) is mounted on the rear cross -bar, while the tongue A projects forward from the center of the front cross-bar.

O is the harrow, which is quite long and narrow, and may be of the ordinary or any convenient construction. This harrow is suspended centrally from the axle-tree A by chains 0 c, and hangs below such axle-tree, extending nearly from one wheel to the other. The chains 0 c are joined to rods or chains 0 0, running from the outer beams of the harrow, and meeting over the center of such harrow near each end thereof. The chains 0 0 pass through the axle-tree, and are connected at their upper ends to a cross-bar, d, which is supported centrally in the end of a foot-lever, D. This lever is pivoted, in short standards on the axle-tree,

directlyin front of and below the driversseat,

so that such lever can be depressed by the foot of the driver. l

It will be seen that by hanging the-harrow in this manner it will be suspended loosely and on a horizontal plane, so that it can accommodate itself to the irregularities of the ground, independent of the rocking movement of the main frame, and the harrow, when .raised from the ground, will be lifted bodily and on the same horizontal plane, and not elevated alone at one end,'as heretofore.

E E are two curved spring-arms, which are secured to the front cross-bar of the main frame, one near each end of the same. These arms are made of metal, and are curved outwardly and downwardly, and are preferably tapered, as shown, so as to form stifi springs.

The lower ends of the spring-arms are loosely connected to the forward beamof the harrow by means of rods or chains 0 e. The harrow is drawn forward by these spring-arms and the connecting-chains, the said spring-arms relieving the machine from any shock when the harrow strikes an immovable obstruction, and allowing the harrow to ride over such ob: struction.

By using these spring-arms the harrow and' under side of the pinion g to the frame of the I harrow, and when the machine is moved the harrow is vibrated from side to side by means of this pitman.

For the purpose of throwing the pinion 9 out of mesh with the gear G, I provide a lever, H, which passes down through the axle-tree, in which it is pivoted, and has a turned lower end, through which the shaft F passes. By moving the lever H, the lower end of the shaft F will be swung away from or toward the wheel, and

TENT, FH

the pinion g thrown out of -01 into mesh with the gear G. A spring-latch, h, holds the lever in either position.

The means employed for vibrating the harrow, it will be seen, are very simple.

'My harrow may be usedin connection with a seeder, I ,'if desired. 7 t a The advantages of my machine lie principally in its simplicity, its durability, and the ease and efficiency with which it can be operated.

Having thus fully described my machine, what I'claim as new therein, and desire to secure by Letters Patent, is-

1. In a sulky-harrow, the combination, with the main frame, of the barrow-frame O, suspended" loosely from its center to suchmain frame, and adapted to be vibrated from sideto side, and springs E E, by which saidharrow frame is drawn forward, substantially as de---- scribed and shown. l

In 'a' 'sulky-harrow, the harrow-frame 0, adapted to be vibrated from side to side, in combination with the spring-arms E E and connecting-rods e 0, whereby the barrow-frame is drawn forward by springs without interfering with its vibrating movement, substantially;

.E' and rods as for drawing the same forward, substantially as described.

ROBERT MITCHELL.

Witnesses:

a Josnrn HUNTER,

-A. J SAW'YER, 

